/*
 * Tencent is pleased to support the open source community by making BK-JOB蓝鲸智云作业平台 available.
 *
 * Copyright (C) 2021 Tencent.  All rights reserved.
 *
 * BK-JOB蓝鲸智云作业平台 is licensed under the MIT License.
 *
 * License for BK-JOB蓝鲸智云作业平台:
 * --------------------------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
 * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

package com.tencent.bk.job.common.util;

import org.apache.commons.collections4.CollectionUtils;

import java.util.Collection;
import java.util.List;
import java.util.function.Consumer;

/**
 * 分批处理工具类
 */
public class BatchUtil {

    /**
     * 分批执行工具
     *
     * @param targets   执行目标列表
     * @param batchSize 每批次大小
     * @param execution 执行函数
     * @param <E>       执行目标
     */
    public static <E> void executeBatch(Collection<E> targets,
                                        int batchSize,
                                        Consumer<Collection<E>> execution) {
        if (CollectionUtils.isEmpty(targets)) {
            return;
        }
        if (targets.size() <= batchSize) {
            execution.accept(targets);
        } else {
            List<List<E>> targetBatches = CollectionUtil.partitionCollection(targets, batchSize);
            targetBatches.forEach(execution);
        }
    }
}
